Finding the Fourth Proportional to 2,156,357.03, 2,976,729.21 and 1,392,782.99
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Solution
The fourth proportional to 2,156,357.03, 2,976,729.21 and 1,392,782.99 is: 1,922,658.33
Step by Step Solution
- Step 1: Write the proportion equation
2,156,357.03 : 2,976,729.21 = 1,392,782.99 : x - Step 2: Convert to fraction form
2,156,357.03/2,976,729.21 = 1,392,782.99/x - Step 3: Cross multiply
2,156,357.03x = 2,976,729.21 × 1,392,782.99 - Step 4: Simplify right side
2,156,357.03x = 4,145,937,794,640.49 - Step 5: Solve for x
x = 4,145,937,794,640.49/2,156,357.03 - Step 6: Final answer
x = 1,922,658.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.